The best solution is not to have anything programmed in the VHF LO band.
In many parts of the country this is not a problem, because nobody is using low band any more.
If you are using Sentinel, then using "nationwide frequencies" is what is probably causing your problem. You can turn that off in the radio itself.
Probably doing that, and getting a GPS receiver for your radio would be the best two options to eliminate getting stuck on some low band noise .
In 18 wheeler and running a lot of areas you may already use GPS with the 436, but if you don't I highly recommend it and the full database as opposed to programming favorites lists while traveling. Favorites lists only when staying in one area.